<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
    <form action="/javaweb/MyServlet" method="get">
        <input type ="text" name="username" value="12312" />
         <input type ="text" name="password" value="admin" />
        <input type="submit"  value="提交" />
    </form>
</body>
</html>